<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Netty-WebSocket聊天</title>
</head>
<body>
<script type="text/javascript">
    var socket;

    function connectServer() {
        alert(1);
        if (!window.WebSocket) {
            window.WebSocket = window.MozWebSocket;
        }
        if (window.WebSocket) {
            socket = new WebSocket("ws://127.0.0.1:9000/ws");
            socket.onmessage = function(event) {
                var ta = document.getElementById('responseText');
                ta.value = ta.value + '\n' + event.data
            };
            socket.onopen = function(event) {
                var ta = document.getElementById('responseText');
                ta.value = "连接开启!";
            };
            socket.onclose = function(event) {
                var ta = document.getElementById('responseText');
                ta.value = ta.value + "连接被关闭";
            };
        } else {
            alert("你的浏览器不支持 WebSocket！");
        }
    }

    function send(message) {
        if (!window.WebSocket) {
            return;
        }
        if (socket.readyState == WebSocket.OPEN) {
            socket.send(message);
        } else {
            alert("连接没有开启.");
        }
    }
</script>
<form onsubmit="return false;">
    <input type="button" onclick="javascript:connectServer()" value="连接服务器">
    <h3>Netty-码家学院 聊天室：</h3>
    <textarea id="responseText" style="width: 500px; height: 300px;"></textarea>
    <br>
    <input type="text" name="message"  style="width: 300px" value="聊天文字在此....">
    <input type="button" value="发送消息" onclick="send(this.form.message.value)">
    <input type="button" onclick="javascript:document.getElementById('responseText').value=''" value="清空聊天记录">
</form>
<br>
<br>
</body>
</html>